Rocker side bearing for railway-cars.



PATENTED APR. 14, 190.3 w. H. MINER.

ROCKER SIDE BEARING FOR RAILWAYUARS.

APPLICATION FILED DBO. a1, 1902.

' no uonnn.

WITNESSES: :INVENTOIR.

UNITED STATES PATENT OFFICE.

WILLIAM HIMINER, OF OHIOAGO,ILLINOIS,. AssIeNoR TO W. H. MINER COMPANY,013 CHICAGO, ILLINOIS, AICORPORATION on ILLINOIS.

ROCKER SIDE BEARING FOR RAILWAY-CARS.

SPECIFICATION forming part of Letters Patent No. 72 5,350, dated April14, 1 903.

Application filed December 31, 1902. Serial No."137. 274. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM H. MINER, a citizen of theUnited States,residing in Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Rocker SideBearings for.

Railway-Cars, of,whichv the followingis a specification.

My invention relates to improvements in rocker side bearings forrailway-cars, and more particularly to improvements upon thegravity-rocker side bearing forming the subject of United States PatentsNo. 646,986, of April 10, 1900, No. 668,642, of February 26, 1901, andNo. 715,577, of December 9, 1902.

The object of my invention is to provide a rocker side bearing in whichthe base or bottom plate and reciprocating top plate are socuredtogether by interfitting guides or flanges and which will at the sametime admit of the rockers being inserted in position between the top andbottom plates after the top and bottom plates are assembled and lockedtogether by their interfitting guides or flanges.

My invention consists in the meansI employ to practically accomplishthis'object or resu1t-that is to say, it consists, in connection withthe bottom plate, reciprocating top plate, and a pair of gravityreturning rockersv provided with teeth on their lower bearingfaces, inproviding the bottom 'plate with removable tooth-be'aring sections whichmay be inserted and locked in position after the rockers are in place,so that the teeth of the bottom plate will thus not obstruct theinsertion of the rockers in position between the top and bottom plates.After the rockers are inserted in position the tooth-bearing sections ofthe bottom plate are inserted from" below and secured in place by anysuitable means.

My invention further consists in the novel construction of parts anddevices and in the novel combinations of parts and devices herein shownor described.

In the accompanying drawings, forming a part of this specification,Figure 1 is a perspective view of a rocker side bearing em bodying myinvention. Fig. 2 is a vertical section on the line 2 2 of Fig. 3. Fig.3 is a vertical section on the line 3 3 of Fig. 1. Fig.

B is the bottom or base plate of the side bearing, the same or its treadBbeingeurved on the arc of a circle whose center is the kin g- Thebottom bolt on which the bolster turns. plate B is provided with uprightside'guides 1), having projectingflanges b. p I

D is the reciprocating top plate 'of the side bearing, the same havingdownwardly-projecting side guides d and flanges d, th'e guides andflanges d cl interfitting and engaging with the guides and flanges III)to hol'dthe top and bottom plates together, while permitting the topplate to reciprocate in respect to the bottom plate.

The base or bottom plate B is provided with separate or removabletooth-bearing central sections 13 B which fitin suitable shoulderedsockets or recesses 19 in the bottom plate, the toothed sections Bhaving flanges Z2 with rounded corners b, so that after the sections Bare in place they may be secured in posi- "on by simply upsetting themarginal edges 12 of the socket or recess b F F are the gravityreturning rockers, the

same having alarge curved lower bearingface f and a small curved upperbearing-face -f forthe top'plate B and bottom plate D to 1 ride and bearagainst. H The lower curved bearing-face f of each of the rockers Fisconcave or inclined, as illustrated in the drawings, to fit andcorrespond to the rounded or convex or double-inclined tread B of thebottom plate. Theouter end f of each rocker is somewhat larger indiameter than the inner end f thereofthat is to say, disregarding theconcavity in the lower bearing-face of the rocker the same are somewhattapering or conical to compensate for the curvature of the tread B aboutthe king-boltas a center, as will be readily understood from the brokenlines XXin Fig. 2. The lower large bearingface f and the upper smallbearing-facef are concentric with each other, so that the turning of therockers will not tend to lift, separate, or vary the distance betweenthe top and I y bottom plates. The top plate D is provided with curvedsegmental sockets (Z to receive the upper small bearing-facesf" of therocker. The side guides d of the top plate D are provided with recessesd to receive the projecting ends or studs f of the rockers and by whichin connection with the curved sockets or bearings d the reciprocatingtop plate is connected to the gravity-rockers F F, and thus caused toreturn to position when the rockers return to their central or normal position by the gravity action of their large lower bearing-faces. Therockers F F are provided on their lower large bearing-faces ffwithcentral rows of teeth f f which mesh with corresponding teeth 19 b onthe separate or removable sections 13 B of the base or bottom plate, andthe marginal flange or web (1 at the end of the top plate D is notchedor cut away at d to the extent necessary to permit the rockers to beinserted in position between the top and bottom plates when the rockeris turned into a horizontal position, as indicated in the dotted linesin Fig. 3, the removable tooth-bearing section B of the bottom platebeing at this time not in position. After the rockers are this wayinserted between the top and bottom plates and put in position then theseparate or removable tooth-bearing sections B B are inserted andsecured in position by upsetting the marginal edges Z2 of the bottomplate over the rounded edges of the removable sections 13 The top plateD is provided with a central transverse web (1 and the bottom plate witha central transverse web b. After the rockers are thus putin positionbetween the top and bottom plates and the removable sections 13 of thebottom plate fixed in place all the parts of the rocker side bearings asa whole are securely united together so they cannot be separated.

I claim- 1. In a rocker side bearing for railway-cars, the combinationwith a bottom plate secured to the truck-bolster, of a reciprocating topplate, said top and bottom plates having interfitting guides andflanges, a pair of automatic gravity returning rockers interposedbetween said bottom plate and said reciproeating top plate, and providedwith teeth on their lower bearing-faces, said bottom plate havingseparate or removable tooth-bearing sections adapted to be fixed inposition after the rockers are in place to enable the rockers to beinserted in position between the top and bottom plates, substantially asspecified.

2. In a rocker side bearing, the combination with a bottom plate and topplate provided with interfitting guides, of rockers interposed betweenthe top and bottom plates and having teeth on their lower bearing-faces,

said bottom plate being provided with sepa-- rate tooth-bearingsections, substantially as specified.

3. In a rocker side bearing, the combination with rockers having toothedbearin faces, of a reciprocating top plate and a bottom plate having aseparate tooth-section adapted to be fixed in place after the rock ersare in position, substantially as specified.

4. In a rocker side bearing, the combination with a. bottom plate havinga socket to receive a separate tooth-section, a tooth-section fitting insaid socket and secured therein by upsetting the edges of the socket inthe bottom plate, a reciprocating top plate, and a pair of interposedrockers having teeth on their lower bearing-faces, substantially asspecified.

5. The combination with a reciprocating top plate D, having notches clat its ends, of rocker side bearings F having teeth on their lowerbearing-faces, and bottom or base plate B having sockets b and removabletooth-bearing sections 13 having rounded edges 1) to adapt the same tobe secured in place in the bottom plate by upsetting the marginal edgesof the socket in the bottom plate, substantially as specified.

WILLIAM H. MINER.

Witnesses:

H. M. MUNDAY, EDMUND ADCOCK.

